题目After men landed on the moon in1969,astronauts around the world had a problem --- there were no other places the could go!Even today the other planets are still too far away for astronauts to fly to.So,while rockets and robots can go to other planets,flights with as...
【题目】阅读理解Since the first person walked onthe moon in 1969, technology hasgreatly helped space exploration. Inrecentyears scitits have bult aspca obo t accompan stonaut onspac msions(任务). Becausthsobotlooks and moveslikea person si-ess calia humanidrobot Theatet modelo thehu-manoid ro...
【题目】Since the first person walked on the moon in1969, technology has greatly helped space exploration. In recent years scientists have built aspecial robot to accompany astronauts on spacemissions(任务).Because this robot looks and moves like a person, scientists call it a humanoid robot. T...
Since the first person walked on the moon in 1969, technology has greatly helped space exploration. In recent years scientists have built a special robot to accompany astronauts on space missions (任务). Because this robot looks and moves like a person, scientists call it a humanoid robot. Th...
Should the mission prove a success, the astronauts will be the first humans to see the far side of the Moon with their own eyes since Apollo 17 in 1972.【文章大意】本文是一篇说明文, 主要介绍了中国、俄罗斯、印度和美国的登月计划。 答案 figure out a way to solve the problem 结果二 题目 ...
On 14 December 2013,China successfully landed its Jade Rabbit rover(探测车) on the moon. It is now working on its next exploration mission. Named Chang'e 4,the mission is scheduled to touch down in the Aitken Basin near the end of 2018. If successful, it will be the first landing ...
只是一种可能性不是必然,因此排除;C选项文中说All being well, a crewed capsule will follow in 2023.即一切顺利,2023年将有一个载人太空舱,因此C选项是对的;D选项意思为自1972年以来,人类已经对月球开始了积极探索,文中只说No human has set foot on the moon since 1972.即直到1972年以后人类的足迹才...
句意:自从人类踏上月球已经50年了。考查现在完成时。since自从;when当……时候;while 当……时候;until直到。根据句意和上下句的时态可知,表示“自从”,从句表示的是时间段,故选A。结果一 题目 It has been 50 years man first stepped on the moon.A.sinceB.whenC.whileD.until 答案 A考查从属连词。since...
阅读理解ANo human has set foot on the moon since 1972. Now, after more1. What will China do in its next spacethan four decades of inactivity, interest in putting humans back on themission?moon is finally heating up again. But who will get there first?A. Improve its Jade Rabbit rover....
试题来源: 解析 【解析】It has been 50 years是现在完成时,它表明的是某个动作和状态从过去一直持续到现在,因此结合后面的句子可知这里应该说"自从",所以要用since,表示从stepped这个动作发生到现在.when和while都有"当...时候"的意思.under的意思是"直到"故选:A. ...